And finally, Bieber tweeted a third video to 26-year-old "Call Me, Maybe" star Carly Rae Jepsen. Bieber helped launch Jepsen's career when he shared a music video of himself with pals Selena Gomez and Ashley Tisdale dancing to her song.

"Haha. Carly Rae Jepsen watch this," he tweeted with a link to Beer's mashup of his "Boyfriend" song and Jepsen's "Call Me, Maybe." "Pretty funny. Reminds me of my old videos. ?Mash up freak out?."